This is exactly why we're worried about people requesting full versions of games.
Shard workshop very much still around, it's just that they haven't produced another audiogame since 2014 and have been making graphical games instead, but their old games are still available, see This page for details of zero site.
I'd strongly recommend both Zero site games, as they're great fun, very random and also extremely detailed and customizable, and of course if people maintain interest in their audiogames they might be more likely to make more of them.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)